求函数y=cos﹙2x-π/3﹚,x∈[π/6,π/2]的单调减区间及值域

问题描述:

求函数y=cos﹙2x-π/3﹚,x∈[π/6,π/2]的单调减区间及值域

y=cos(2x-π/3),x∈[π/6,π/2]
π/6